Latch



(No Model.)

C. E. BILLINGS. Latch.

No. 231,260. Patented Aug. 17,1880.

//q i ,Bj fm )S/1. micas.

NJETFRS, PHOTO-LH MOGRAPHER. WASHINGTON. D C4 UNITED STATES PATENTOFFICE.

CLARK E. BILLINGS, OF WARREN, VERMONT.

LATCH.

SPECIFICATION forming part of Letters Patent No. 231,260, dated August1'7, 1880.

Application filed J une i12, 1880. (No model.)

To all whom it may concern:

Beit known that I, CLARK E. BILLINGs, of Warren, in the county of Washington and State of Vermont, have invented-certain new and usefulImprovements in Gravitatin g Latches 5 and I do hereby declare that thefollowing is a full, clear, and exact description of the invention,which will enable others skilled in the art to which it appertains tomake and use the same, reference being had to the accompanying drawings,and to letters of reference marked thereon, which form a part of thisspecication.

My invention relates to gravitating latches; and it consists of a latchoperated by means of a weighted lever, constructed as shown in thedrawings, and as hereinafter fully described.

In the drawings, Figure 1 is a view of the latch without the removableplate, showingl the interior devices with the bolt thrown out. Fig. 2 isthe same view with the bolt thrown back. Fig. 3 is a side view of theknob-lever detached.

A represents the latch-case, having the stud a, provided withscrew-threads to receive the screw which holds in place the removableplate of the case. This stud is located in position to form the stop forthe bolt B, which is provided with a shoulder, b, to catch against thestud a, as shown in Fig. 1. This bolt is provided also with a recess, c,to receive the upper rounded end, c', of the weighted lever G, which ispivoted on a pin, d, on the inside ot' the fixed plate of the case.

D is the knob-lever, provided with the two lugs d and d2. The lug d isadjusted to bear against the lever O above the pivotal pin d, and thelug d2 bears against the other side of the lever below the pivotal pin,so that the bolt maybe thrown back by turning the knob in eitherdirection.

To secure the greatest practicable force to the bolt the pivotal pin dis located as near as practicable to the upper end of the lever C, andthe weighted end C is made as large as the space in the case will allow,with room for the movements ot' the lever.

It is readily seen that this construction of a latch is very simple,easily operated, not liable to get out of order, and secures superiorforce to the bolt, which is of great importance in this class oflatches.

What I claim as new, and desire to secure by Letters Patent, in agravitatin g latch, is

The combination of the case A, provided with the stop-lug a and pivotalpin d, the bolt B, provided with the stop-shoulder b and recess c, thepivoted weighted lever (l, having its upper end, c', adjusted in therecess c ofthe bolt, and the knob-lever D, provided with the lugs d d2,substantially as and for the purposes described.

In testimony that I claim the foregoing as my own invention I affix mysignature in presence of two witnesses.

CLARK E. BILLINGS.

Witnesses:

JAMEs CARDELL, JAMES BLAIR, Jr.

